diff --git a/GPy/__version__.py b/GPy/__version__.py
index 9e4d4532..3e2f46a3 100644
--- a/GPy/__version__.py
+++ b/GPy/__version__.py
@@ -1 +1 @@
-__version__ = "0.8.31"
+__version__ = "0.9.0"
diff --git a/setup.cfg b/setup.cfg
index 67beac85..0a6fc3a3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.8.31
+current_version = 0.9.0
 tag = True
 commit = True